I got keyboards form Chris. Some were very dirty, but all except one were working, yet most of them required re-soldering of a mouse port. It was a good buy.

I've made some observation - one of these keyboards had a base frame with additional "bumps", yet all had the same PCB and all were CA070138-003U. Before I've seen such frame, but that keyboard had a different PCB (double sided) and different model.